| Sailboat | Sifflet.UI.LittleGtk, Sifflet.UI |
| SAtom | Sifflet.Foreign.ToScheme |
| SbDownArrow | Sifflet.UI.LittleGtk, Sifflet.UI |
| SbHDoubleArrow | Sifflet.UI.LittleGtk, Sifflet.UI |
| SbLeftArrow | Sifflet.UI.LittleGtk, Sifflet.UI |
| SBool | Sifflet.Foreign.ToScheme |
| SbRightArrow | Sifflet.UI.LittleGtk, Sifflet.UI |
| SbUpArrow | Sifflet.UI.LittleGtk, Sifflet.UI |
| SbVDoubleArrow | Sifflet.UI.LittleGtk, Sifflet.UI |
| SChar | Sifflet.Foreign.ToScheme |
| SchemeOptions | |
| 1 (Type/Class) | Sifflet.Foreign.ToScheme |
| 2 (Data Constructor) | Sifflet.Foreign.ToScheme |
| ScrolledWindow | Sifflet.UI.LittleGtk, Sifflet.UI |
| scrolledWindowNew | Sifflet.UI.LittleGtk, Sifflet.UI |
| scrolledWindowSetPolicy | Sifflet.UI.LittleGtk, Sifflet.UI |
| ScrollMask | Sifflet.UI.LittleGtk, Sifflet.UI |
| Selection | Sifflet.UI.Types, Sifflet.UI |
| SelectionInlet | Sifflet.UI.Types, Sifflet.UI |
| SelectionNode | Sifflet.UI.Types, Sifflet.UI |
| SelectionOutlet | Sifflet.UI.Types, Sifflet.UI |
| selInEdge | Sifflet.UI.Types, Sifflet.UI |
| selNode | Sifflet.UI.Types, Sifflet.UI |
| selOutEdge | Sifflet.UI.Types, Sifflet.UI |
| sepComma | Sifflet.Text.Pretty |
| sepCommaSp | Sifflet.Text.Pretty |
| sepLines | Sifflet.Text.Pretty |
| sepLines2 | Sifflet.Text.Pretty, Sifflet.Foreign.ToScheme |
| sepSpace | Sifflet.Text.Pretty |
| set | Sifflet.UI.LittleGtk, Sifflet.UI |
| setColor | Sifflet.Rendering.Draw |
| setCursor | Sifflet.UI.GtkForeign, Sifflet.UI |
| setFont | Sifflet.Data.TreeLayout |
| setWSCanvasCallbacks | Sifflet.UI.Window, Sifflet.UI |
| SExpr | Sifflet.Foreign.ToScheme |
| SFloat | Sifflet.Foreign.ToScheme |
| SFunction | Sifflet.Foreign.ToScheme |
| showChoicesDialog | Sifflet.UI.GtkUtil, Sifflet.UI |
| showErrorMessage | Sifflet.UI.GtkUtil, Sifflet.UI |
| showFedWin | Sifflet.UI.Window, Sifflet.UI |
| showFunctionEntry | Sifflet.UI.Tool, Sifflet.UI |
| showFunctionPadWindow | Sifflet.UI.Window, Sifflet.UI |
| showInfoMessage | Sifflet.UI.GtkUtil, Sifflet.UI |
| showInputErrorMessage | Sifflet.UI.GtkUtil, Sifflet.UI |
| showLiteralEntry | Sifflet.UI.Tool, Sifflet.UI |
| showMessage | Sifflet.UI.GtkUtil, Sifflet.UI |
| showWindow | Sifflet.UI.Window, Sifflet.UI |
| showWorkspaceWindow | Sifflet.UI.Window, Sifflet.UI |
| showWorkWin | Sifflet.UI.Window, Sifflet.UI |
| Shuttle | Sifflet.UI.LittleGtk, Sifflet.UI |
| simplifyExpr | Sifflet.Foreign.Exporter |
| SInt | Sifflet.Foreign.ToScheme |
| Size | |
| 1 (Type/Class) | Sifflet.Data.Geometry |
| 2 (Data Constructor) | Sifflet.Data.Geometry |
| sizeH | Sifflet.Data.Geometry |
| sizeW | Sifflet.Data.Geometry |
| Sizing | Sifflet.UI.LittleGtk, Sifflet.UI |
| SList | Sifflet.Foreign.ToScheme |
| Spider | Sifflet.UI.LittleGtk, Sifflet.UI |
| Spraycan | Sifflet.UI.LittleGtk, Sifflet.UI |
| SString | Sifflet.Foreign.ToScheme |
| SSymbol | Sifflet.Foreign.ToScheme |
| Star | Sifflet.UI.LittleGtk, Sifflet.UI |
| Statusbar | Sifflet.UI.LittleGtk, Sifflet.UI |
| statusbarGetContextId | Sifflet.UI.LittleGtk, Sifflet.UI |
| statusbarNew | Sifflet.UI.LittleGtk, Sifflet.UI |
| statusbarPop | Sifflet.UI.LittleGtk, Sifflet.UI |
| statusbarPush | Sifflet.UI.LittleGtk, Sifflet.UI |
| StructureMask | Sifflet.UI.LittleGtk, Sifflet.UI |
| stub | Sifflet.Util |
| Style | |
| 1 (Type/Class) | Sifflet.Data.TreeLayout |
| 2 (Data Constructor) | Sifflet.Data.TreeLayout |
| style0 | Sifflet.Data.TreeLayout |
| style1 | Sifflet.Data.TreeLayout |
| style2 | Sifflet.Data.TreeLayout |
| style3 | Sifflet.Data.TreeLayout |
| styleActiveEdgeColor | Sifflet.Data.TreeLayout |
| styleActiveFillColor | Sifflet.Data.TreeLayout |
| styleActiveTextColor | Sifflet.Data.TreeLayout |
| styleAuxColor | Sifflet.Data.TreeLayout |
| styleAuxFont | Sifflet.Data.TreeLayout |
| styleAuxOffset | Sifflet.Data.TreeLayout |
| styleFont | Sifflet.Data.TreeLayout |
| styleFramePad | Sifflet.Data.TreeLayout |
| styleIncreasePadding | Sifflet.Data.TreeLayout |
| styleIoletRadius | Sifflet.Data.TreeLayout |
| styleNormalEdgeColor | Sifflet.Data.TreeLayout |
| styleNormalFillColor | Sifflet.Data.TreeLayout |
| styleNormalTextColor | Sifflet.Data.TreeLayout |
| styleSelectedEdgeColor | Sifflet.Data.TreeLayout |
| styleSelectedFillColor | Sifflet.Data.TreeLayout |
| styleSelectedTextColor | Sifflet.Data.TreeLayout |
| styleShowNodeBoxes | Sifflet.Data.TreeLayout |
| styleShowNodePorts | Sifflet.Data.TreeLayout |
| styleTetherColor | Sifflet.Data.TreeLayout |
| styleTextExtents | Sifflet.Data.TreeLayout |
| sub1 | Data.Number.Sifflet |
| subForest | Sifflet.Data.Tree |
| SubMenu | Sifflet.UI.Callback, Sifflet.UI |
| SubstructureMask | Sifflet.UI.LittleGtk, Sifflet.UI |
| Succ | Sifflet.Util |
| SuccFail | Sifflet.Util |
| suppressScimBridge | Sifflet.UI.GtkUtil, Sifflet.UI |
| Symbol | |
| 1 (Type/Class) | Sifflet.Language.Expr |
| 2 (Data Constructor) | Sifflet.Language.Expr |